Saw-clamp.



G. A. SEIBERT.

SAW CLAMP.

APPLICATION FILED MAR. 11, 1910.

Patented Feb. 13, 1912.

2 SHEETS-SHEET 1.

G. A. SBIBERT.

SAW CLAMP.

APPLICATION FILED MAR. 11, 1910.

Pai ented Feb. 13,1912.

2 SHEETSSHEET 2.

COL

UNTTED STATES PATENT @FFTCE.

CHRISTOPHER A. SEIBERT, 0F SANDYVILLE, OHIO.

SAW-CLAMP.

To all whom it may concern:

Be it known that I, CHRISTOPHER A. Sni- BERT, citizen of the UnitedStates, residing at Sandyville, in the county of Tuscarawas and State ofOhio, have invented certain new and useful Improvements in Saw- Clamps,of which the following is a specification.

This invention relates to an improvement in saw clamps and has for anobject to pro vide an efficient clamp for rigidly supporting saws duringthe filing of the same, and for binding the saw at various pointsthroughout its length, irrespective of any variation in the thickness ofthe saw.

The invention has for another object the provision of a clamp which isformed of comparatively few parts which are arranged in detachablerelation, and are so formed that when assembled they produce a strongand durable clamp adaptable for general usage.

The invention essentially comprises a clamp including a plurality oflooking members, having independent set-screws for operating the same soas to obtain considerable leverage upon the jaw which is operatedthereby.

For a full understanding of the invention reference is to be had to thefollowing description and accompanying drawings, in which V Figure 1 isa perspective view of the improved saw clamp disclosing in dotted linesa saw positioned therein. Fig. 2 is a section through one end of theclamp disclosing the end bracket. Fig. 3 is a section through thecentral portion of the clamp disclosing one of the inner brackets. Fig.4 is a transverse section through one of the central brackets,disclosing the outer arm of the same.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

Referring to the drawings the numeral 10 designates a work-table, orother suitable support upon the edge of which the improved clamp ismounted. The clamp coniprises inner brackets 11 and end-brackets 12. Thebrackets are arranged in spaced parallel relation on the edge of theworktable 10 and project slightly above the upper surface thereof. Theinner brackets 11 each comprise a casting of U-form which is pro-Specification of Letters Patent.

Application filed March 11, 1910.

Patented Feb. 13, 1912.

Serial No. 548,681.

vided at its rear edge and adjacent its opposite ends with pairs ofoutwardly extending ears 13. The ears 13 bear against the side of thetable 10 and are suitably apertured for the reception of screws 14, orthe like. The inner or rear edge of the bracket 11 is further providedwith a finger 15 having a flattened under face which projects inwardlyfrom a point immediately above the upper ears 13 so as to rest upon theupper face of the table 10. The inner arm of the bracket 11 extendsupwardly above the finger 15 and is reduced to form a stud 16 and ashoulder 17. The shoulder 17 is formed in the outer edge of the arm andprovides a seat for the detachable inner jaw 18. The end-brackets 12 areprovided at their inner edges with ears 19 which bear against the outerface of the work-table l0 and are suitably apertured to receive screws,or the like, the brackets 12 being further retained in position by theinwardly projecting fingers 20. The inner arm of each of the brackets 12extends upwardly beyond the finger 20 and is offsetinwardly to provide astud 21 and a shoulder 22. The shoulder 22, in this instance, is formedupon the inner edge of the inner arm and provides a seat for the jaw 18.

From Figs. 2 and 3 it will be observed that the opening 23 in thebracket 11 is of a size suflicient only to receive the saw blade, whilethe opening 24 in the bracket 12 is enlarged to receive the handle ofthe saw. The outer arm of the bracket 11 terminates below the upper endof the inner arm and is slightly reduced as at 25 to engage in a recess26 formed in the inner edge of a looking lever 27. A pivot pin 28 passesthrough the lever 27 and the reduced portion 25. The upper or short armof the lever 27 is reduced at its extremity to form a stud having ashoulder 31 to receive the jaw 30 and to hold the same from downwardmovement. The lower end of the long arm of the lever 27 is reduced inthickness and extends downwardly against the outer edge of the outer armof the bracket 11. A setscrew 32 passes through the lower end of thelever 27 and abuts at its inner end the edge of the bracket 11. Theend-brackets 12 are each provided with a lever 33 similar inconstruct-ion to the lever 27 with the exception that the upper or shortarm thereof is offset inwardly to form a stud 34 and a shoulder 35corresponding to the stud 21 and shoulder 22. The studs 21 and 34 areoffset inwardly to register with the openings in the jaws 18 and 30respectively.

The jaws 18 and 30 each' comprise a length of metal provided atintervals with registered. enlargements 36 having apertures 37 extendingtherethrough. The enlargements 36 register with the studs of therespective brackets 11 and 12 and serve to receive said studs. The innerenlargements 36, or the enlargements which register with the innerbrackets 11 are provided with setscrews 38 to engage at their inner endsthe outer faces of the studs 16 and 29 in order to secure the jaws 18and 30 in position. The jaws 18 and 30 extend a short distance beyondthe end-brackets 12 and are reduced,

Y or otherwise suitably formed to present rounded or beveled edges. Thepivot pins 28 are preferably in the form of bolts having clamping nutswhereby the levers 27 and 33 may be quickly detached from theirrespective brackets.

The outer end of the clamp is provided With a support to hold the handleof the saw when positioning the same within the clamp. The supportcomprises an arm 39 which projects longitudinally from one of theend-brackets 12 and carries depending lugs 40 for detachable andfrictional engagement with the lower end of the adjacent bracket 12. Theouter end of the arm 39 is slightly enlarged and is vertically aperturedto snugly receive a rest 11. The rest 41 is disclosed as being formed ofa length of wire which is looped at its upper end, and flattened toprovide an arcuate bearing surface 42 adapted to receive the roundededge of the saw handle. A setsorew 13 is positioned in the outer end ofthe arm 39 for engagement with the rest 41 thereby to secure said restin adjusted position.

In operation, the saw is inserted between the jaws 18 and 30 and therest 41 adjusted to support the inner end of the saw with the teeththereof projecting a slight distance above the jaws. The opposite end ofthe saw is then held by the hand at the desired adjustment, while theset-screws are operated to swing the upper ends of the levers 27 and 33inwardly to thereby force the outer jaw 30 against the saw. Owing to thelength of the arms of the levers 2'7 and 33 and the set-screws passingthrough the same a considerable leverage is obtained Copies of thispatent may be obtained for five cents each, by addressing theCommissioner of Patents.

whereby the jaw 30 is carried with considerable force into engagementwith the saw.

It can be readily seen that two or more of the brackets only may beemployed and that the jaws 18 and 30 may be of any clesired length toprovide saw clamps for saws of various lengths.

Having thus described the invention what is claimed as new is 1. Thecombination with a saw clamp including a supporting bracket havingspaced upstanding members adapted to embrace a saw, of an arm extendinglaterally from the bracket and provided with spaced depending lugsengaging the opposite walls of said bracket between the upstandingmembers thereof, a support mounted for vertical movementin the free endof the arm and having its upper end provided with a seat for the sawhandle, and means extending through the arm and engaging the ad acentend of the support for holding the latter in different positions ofvertical adjustment.

2. A saw clamp including a substantially U-shaped bracket having arms ofdifferent lengths, the long arm of said bracket being provided withlaterally extending ears for attachment to a support and having itsupper end reduced to form a vertically disposed stud defining aninwardly extending shoulder, a clamping member having its intermediateportion pivotally mounted. on the short arm of the bracket and havingits upper end reduced to form a stud defining an inwardly extendingshoulder arranged diametrically opposite the shoulder on the long arm,relatively stationary and movable clamping jaws having openings formedtherein for the reception of the studs of the long arm of the bracketand clamping member, respectively, and having their lower faces restingon the adjacent shoulders and their upper faces disposed flush with thefree ends of said studs, and means extending through the lower end ofthe clamping member and engaging the adjacent face of the short arm ofthe bracket for forcing the movable clamping jaw into engagement with asaw.

In testimony whereof I affix my signature in presence of two witnesses.v

CHRISTOPHER A. SEIBERT. Witnesses:

JACOB KLEIN, H. K. NARAGON.

Washington, D. G.

